hummer Hear it!

hummer definition

hum·mer (hum′ər)

noun

  1. a person or thing that hums
  2. ☆ hummingbird
  3. ☆ Baseball, Slang fastball

Webster's New World College Dictionary Copyright © 2009 by Wiley Publishing, Inc., Cleveland, Ohio.
Used by arrangement with John Wiley & Sons, Inc.

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